Leveling device for mill rolls



Jan. 5, 1932. A. FERRE-r1' LEVELING DEVICE FOR MILL ROLLS INVENTOR 4 Sheets-Sheet Jan. 5, 1932. A. PERRET-r LEVELNGDEVICE Fon MILL Roms Filed May :51, 1930` 4 sheets-sheet 2 ATTORNEY Jan. 5, 1,932. A, PERRETT LEVELING DEVICE FOR MILL ROLLS Filed Ma'y 51, 195o 4 sheets-sheet s Ummm www@

ATTORNEY Jan. 5, 1932, A. PERRETT LEVELING DEVICE FOR MILL ROLLS Filed May 51, 19:50

4 Sheets-Sheet 4 Patented Jan. s, 1932 UNITED STAT-ss PAfTaNfr4 y OFFICE Lnvnnmo :envien non MILL nous Application. led May 31,

My present invention has reference to leveling devices for mill rolls.

My object 'is the provision of a drive means for mills which may be attached to an ordinary mill or which may provide a separate unit therefrom and which is of a con-V struction that will obviate theside thrust that puts the shoulder on rounds and which will insure the operator turning out an almost perfect round.

A further object is the provision of a A'drive mechanism for mill` rolls, which may be easily and quickly coupled to the necks ofthe rollsafte-r the said rolls have been ad- 'j usted for different thicknesses of materials vto be acted on, and which will tend to keep the rolls in proper spaced V,relation at all times and thereby do awaywith coupling boxes, spindles, etc. v The invention will be fully and comprehensively understood from aconsideration of vthe following detailed description when read rin connection withvthe accompanying vdrawings which form part of theV application, with the understanding, however, that the improvement is capable-of extended application and is not confined tothe exact showing of the drawings nor to thel precise con'- struction Vdescribed and, therefore, such changes and modifications` may be made therefrom as'do not afectthe spirit of the invention nor exceed the scope thereof as expressedin the appended claims.

. In the drawings:V

Figure 1 is a side elevation of the improvementl in applied position, the couplings beingin section.v

.. Figure 2 is an `endelevation of the imf a .provement y Figure 3 is a sectional view approximately on the line 3 3 of Figure 2.`

f Figure 4 is a sectional view approximately .onthe line 4-4'of Figure 1.

Figure 5 is a detail sectional view approxit5 mately on the line 5-5 of Figure 1.

LThe improvement lis primarily designed for use iny yconnection withk comparatively nsmall mills 1 having rolls 2 and 3 journaled therein and which rolls haveregistering ani `nular grooves for forming the rounds on the cut angularly, asy indicated by the numeral 1930. serial N.`v45s,142.

metal that is drawn between the rolls 2 and 3. The stub shafts or neck portions of the respective upper and lower rolls 2 'and' 3 are journaled through the mill vframe 1 and are indicated for distinction by the numerals 4 55 and 5, respectively.

At one end of the mill 1I arrange upon a suit-able bed 6l the 'baseportions 7 and 8 of what I will term frames 9 and 10, respectively. The spaced uprights pro-vided by the frame 10` have their lower portions connected by a semi-circular web 11, and the top of the frame, above the web is designed to be closed. There is journaled inthe side or end members of the frame 10 the main drive 65 shaft 12 of `the improvement. This `drive shaft 12 has keyed thereon av gear! 13 and. this gear 13 is in mesh with a similar gear 14: that has keyed thereon a jack shaft 15. The jack shaft is arranged alongside of the mainl "(0 drive shaft 12, but the same extends through the frame 10 and is received through bearing openingsin the ends of the frame 9.r On lthe portion of the-jack shaft which extends u into the frame 9 there is keyed or otherwise 75 fixed an elongated gear wheel 16. This gear is in mesh with an upper gear 18y which, is keyed on a counter shaft 19 whose ends are journaled in bearings in the frame 9 and the said gear'16 is likewise in mesh with a gear 80 20 that iskeyed on a shaft 21 which has one end projecting through the frame 9 and lis connected by a coupling 22 to the neck 5 of the lower mill roll 3.

The gear 18 is in mesh with a gear 23 ar- 85 ranged directly above the gear 20, and the gear y23 iskeyed upon a shaft 24 which is coupled, as at 25, to the neck 21 of the upper mill roll 2. f

The shafts 21 and 211 are received through bearingk blocks 26 and 27, respectively, which are guided for vertical movement in suitable pockets 28 in the vertical members of the frameV 9. The 4shafts 21 and 24' also pass through bronze tubular bearing? sleeves 12.9, respectively, that are let through openings in the blocks 26 and 27. The upper. and lower faces of the bearing blocks 26 and 27, are

respectively, and these angle faces are engaged by the wedge ends 30 upon upper and lower as well as intermediate rack carrying members. For distinction the upper and lower wedge rack carrying members are indicated by the numerals 31 and the intermediate wedge rack carrying members by the numeral 32. The Hat confronting faces of the intermediate members 32 are in contacting engagement and by reference to Figure 5 of the drawings it will be noted that when in one position the wedge ends of the rack bars 32 are projected into the pockets to raise the upper bearing 27 and to lower the lower bearing 26 and that the upper and lower wedge carrying racks are projected outwardly a considerable distance from the side of the frame 9.

The rack carrying wedge members are guided through suitable openings in the side of the frame and the toothed portions of the wedge members are engaged by gears 33 and 34, respectively, the gears being, of course, arranged in spaced series and the upper gears engaging with the teeth of the upper rack wedge members and the lower gears engaging with the teeth of the lower pair of rack carrying wedge members.

The spaced toothed wheels or gears 33 and 34 are connected by shafts 35 and 36 which are journaled in suitable bearings in one side of the frame 9 and on each of these shafts there is fixed a handle member 37 and 38, respectively.

In practice the rolls 2 and 3 are adjusted with respect to each other so that the same will properly act upon different thicknesses of metal. The improvement which is really in the nature of a drive means for the rolls has its shafts 21 and 24 vertically adjusted to properly aline with the neck portions 4 and 5 of the rolls 2 and 3 so that the said shafts can be coupled to the necks by the means 22 and 25. This is accomplished by turning either of the hand wheels 37 or 38 so that the shaft or 36 will turu to cause either the upper or lower pair of wedge racks to slide and thereby impart a vertical movement to the bearing blocks 27 or 26. Obviously both of the shafts 35 and 36 may be simultaneously rotated so that the bearing blocks 26 and 27 and the shafts 21 and 24 journaled therethrough may be simultaneously adjusted in either an upward or downward direction and whereby the said shafts may be easily and quickly brought into registering alinement with the necks 4 and5 of the rolls and coupled thereto.

yIt will also be apparent that the adjustment of the shafts 21 and 24 does not bring the gears 20 and 23 out of mesh with the gears 16 and 18, so that the rolls are operated during the adjustment thereof. This 1s an important feature as with no other construction with which I am acquaint-ed can the rolls be adjusted without shutting down the machine and thus causing a loss in labor and production.

It is thought the simplicity of the construction and the advantages thereof will be understood and appreciated by those skilled in the art to which such invention relates so that further detailed description will not be required.

The gears and shafts may be made in one piece so the gears are not keyed to the driving gears. Also I may use six gears to install in an old mill but in a new installation there would be four gears-the device is put in to suit the driving pinion and direct gears 13 and 14 will be eliminated. The driving shaft 15 would then become the main drive.

Having described the invention, I claim:

1. In combination with a mill havin metal forming rolls which are adjusted wi respect to each other, of a drive means for said rolls, comprising a shaft to be coupled to each of said rolls bearing blocks for the shafts having their upper and lower faces beveled in opposite directions, rack members having wedge ends engaging the said beveled faces of the bearings, toothed wheels engaging the racks, hand wheels for operating the toothed wheels for sliding the wedges t0 adjust the bearings with respect to each other and means for turning the shafts.

2. In combination with a mill having upper and lower metal forming rolls of, upper and lower shafts designed to be coupled to the rolls when the said rolls are adjusted for different thicknesses of work, gear wheels keyed on the shafts, bearing blocks for the shafts, guides for the bearing blocks, upper and lower pairs of racks having wedge ends engaging the upper and lower faces of the bearing blocks, toothed wheels meshing with the respective pairs of racks, a shaft connecting the respective toothed wheels, bearings for the shaft, a hand wheel on each shaft, and means for simultaneously imparting motion to the roll drive shafts to turn the rolls in opposite directions.

3. In combination with a mill having upper and lower metal forming rolls of upper and lower shafts designed to be coupled to the rolls when the said rolls are adjusted for operation upon work, gear wheels keyed on the shafts, bearing blocks for the shafts, guides for the bearing blocks, upper and lower pairs of racks having wedge ends engaging the upper and lower faces of the bearing blocks, toothed wheels meshing with the respective pairs of racks, a shaft connecting the respective toothed wheels, bearings for the shaft, a hand wheel on each shaft, a jack shaft and a counter shaft, said jack shaft having an elongated gear thereon in mesh with the lower gear, the counter shaft having a gear thereon in mesh with the upper gear and with t-he elongated gear, and ower driven means for revolving the elevate gear.

4. In combination with a mill having upper and lower` metal forming rolls of, upper and lower shafts designed to be coupled to the rolls when the rolls are adjusted with respect to the work to be operated on, gear wheels keyed on the shafts, bearing blocks for the shafts, guidesV for the bearing blocks, upper and lower pairs of racks having wedge ends engaging the upper and lower faces of the` bearing blocks, toothed wheels meshing with the respective pairs of racks, a shaft connecting the respective toothed wheels,

y bearings for the shaft, a hand wheel on each shaft, a jack shaft and a counter shaft, said jack shaft having an elongated gear thereon in mesh with the lower gear, the counter shaft having a gear thereon in mesh with the upper gear and with the elongated gear, a pinion secured on the jack shaft, a second pinion in mesh therewith and power driven means for revolving the pinions Vand shafts.

In testimony whereof I aiiix my signature.

ALBERT PERRETT. 

